Subtract 5/21 from 70/35, Solve 2 0/35

Subtract 5/21 from 70/35

1^st number: 2 0/35, 2^nd number: 5/21

70/35 - 5/21 is 37/21.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 35 × 3 = 105,
70/35 = 70 × 3/35 × 3 = 210/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
5/21 = 5 × 5/21 × 5 = 25/105
Subtract the two like fractions:
210/105 - 25/105 = 210 - 25/105 = 185/105
After reducing the fraction, the answer is 37/21
In mixed form: 116/21

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad